Automobile model machining and positioning tool

Abstract

The utility model relates to the technical field of automobile model machining, in particular to an automobile model machining positioning tool which comprises an installation base, a fine adjustment mechanism, a positioning pin pipe and a limiting mechanism. The cross section of the mounting base is I-shaped; the fine adjustment mechanism is movably arranged on the mounting base; the positioning pin pipe is arranged on the fine adjustment mechanism, and a conical guide slope is arranged on the periphery of the positioning pin pipe; the limiting mechanism is detachably arranged on the positioning pin pipe and used for limiting the position of the workpiece. The limiting mechanism comprises a mounting cylinder, a limiting assembly, a clamping assembly and an adjusting assembly; the outer diameter of the mounting cylinder is smaller than the inner diameter of the positioning pin pipe, and one end of the limiting assembly is slidably connected with the positioning pin pipe. Through the matching arrangement of the limiting mechanism, the positioning pin pipe and the positioning ring, the positioning device is simple to operate, convenient and practical, the working intensity of workers is reduced, the deviation of a workpiece in the machining process is effectively avoided, and the machining precision of the workpiece and the quality of a finished product are further improved.

Description

Technical Field

[0001] This utility model relates to the field of automobile model processing technology, specifically to a positioning fixture for automobile model processing. Background Technology

[0002] Currently, car models are used to study the feasibility of automobiles. They require multiple clamping and positioning processes. During these multiple processing and positioning processes, due to processing errors, some hole positions deviate. After re-clamping, rapid positioning cannot be achieved, resulting in a decrease in overall processing accuracy and efficiency. In the process of processing car models on the market, each positioning adjustment takes a long time during multiple processing, and the processing accuracy is affected each time.

[0003] Chinese Patent CN219562800U discloses a positioning fixture for automobile model processing, belonging to the field of automobile model processing. Specifically, it relates to a positioning pin assembly for mounting on a processing fixture to support model installation and positioning. It includes a main frame and a deflection adjustment assembly. The deflection adjustment assembly is deflected and positioned on the main frame. The main frame includes a mounting plate, an I-shaped base, a top plate, and side overlapping ears. The I-shaped base is vertically positioned on the mounting plate and located in the center of the mounting plate. The mounting plate has mounting holes and a boss at its bottom, located directly below the I-shaped base and extending to the end of the mounting plate. The side overlapping ears are correspondingly positioned on both sides of the top plate, perpendicular to the top plate. The top plate has threaded holes along the I-shaped base. The deflection adjustment assembly is mounted on the top surface of the top plate by screws, which are screwed into the threaded holes. Adjusting the position of the positioning pin, in conjunction with a guide plate on the top, guides the positioning pin into the positioning hole.

[0004] However, the above technical solution has the following shortcomings: the positioning pin can only perform simple positioning and cannot effectively limit the workpiece after positioning. The workpiece is prone to displacement during the processing, which affects the processing accuracy of the workpiece and the quality of the finished product. Utility Model Content

[0005] The purpose of this invention is to address the problems existing in the background technology by proposing a positioning fixture for automobile model processing.

[0006] The technical solution of this utility model: a positioning fixture for processing automobile models, comprising:

[0007] The mounting base has an "I" shaped cross-section;

[0008] The fine-tuning mechanism is movable on the mounting base;

[0009] The positioning pin is mounted on the fine-tuning mechanism, and a tapered guide slope is provided on the outer periphery of the positioning pin.

[0010] A limiting mechanism, which is detachably mounted on a locating pin tube, is used to limit the position of the workpiece;

[0011] The limiting mechanism includes a mounting cylinder, a limiting component, a snap-fit ​​component, and an adjusting component. The outer diameter of the mounting cylinder is smaller than the inner diameter of the positioning pin tube. One end of the limiting component is fixedly connected to the mounting cylinder, and the other end of the limiting component is slidably connected to the positioning pin tube. Two sets of snap-fit ​​components are provided. One end of the snap-fit ​​component snaps into the inner wall of the positioning pin tube, and the other end of the snap-fit ​​component extends into the interior of the mounting cylinder. One end of the adjusting component is located inside the mounting cylinder and connected to the snap-fit ​​component, and the other end of the adjusting component extends into the exterior of the mounting cylinder.

[0012] Preferably, the surface of the locating pin tube is threaded with a threaded sleeve, and the top end of the threaded sleeve is fixedly connected with a locating ring.

[0013] Preferably, the limiting component includes a connecting rod and a limiting ring; multiple connecting rods are provided, one end of the connecting rod is fixedly connected to the mounting cylinder, the positioning pin tube has multiple movable holes that correspond one-to-one with the connecting rod, and the other end of the connecting rod is fixedly connected to the limiting ring, the inner circle of the limiting ring is larger than the outer diameter of the positioning pin tube.

[0014] Preferably, the snap-fit ​​assembly includes a snap-fit ​​block and a linkage rod; the snap-fit ​​block passes through the mounting cylinder and is slidably connected to the mounting cylinder, the inner wall of the positioning pin tube is provided with a snap-fit ​​groove that matches the snap-fit ​​block, one end of the linkage rod is rotatably connected to the snap-fit ​​block, and the other end of the linkage rod is connected to the adjustment assembly.

[0015] Preferably, the adjustment assembly includes a movable disc, an adjustment rod, and a return spring; the movable disc is slidably disposed inside the mounting cylinder, the linkage rod is rotatably connected to the movable disc, one end of the adjustment rod is fixedly connected to the movable disc, the other end of the adjustment rod passes through the mounting cylinder and extends to the outside of the mounting cylinder, one end of the return spring is fixedly connected to the movable disc, and the other end of the return spring is fixedly connected to the top of the inner wall of the mounting cylinder.

[0016] Preferably, the fine-tuning mechanism includes an adjusting plate and an adjusting screw; the adjusting plate is slidably connected to the mounting base, the positioning pin is fixedly connected to the adjusting plate, one end of the adjusting screw is rotatably connected to the mounting base, and the other end of the adjusting screw passes through the adjusting plate and is threadedly connected to the adjusting plate.

[0017] Compared with the prior art, the above-mentioned technical solution of this utility model has the following beneficial technical effects:

[0018] This invention utilizes a limiting mechanism, a positioning pin tube, and a positioning ring to work together. The positioning pin tube is inserted into the positioning hole of the car model, and the mounting cylinder is inserted into the positioning pin tube. The snap-fit ​​block is inserted into the snap-fit ​​groove under the action of the return spring. The limiting ring and the positioning ring work together to quickly position and fix the car model. This design is not only simple and convenient to operate, reducing the workload of workers, but also effectively prevents the workpiece from shifting during processing, thereby improving the processing accuracy of the workpiece and the quality of the finished product. Attached Figure Description

[0019] Figure 1 This is a perspective view of one embodiment of the present invention;

[0020] Figure 2 This is a perspective view of the positioning pin tube in one embodiment of the present invention;

[0021] Figure 3 This is a perspective view of the limiting mechanism in one embodiment of the present invention;

[0022] Figure 4 This is a cross-sectional view of the limiting mechanism in one embodiment of the present invention.

[0023] Reference numerals in the attached drawings: 1. Mounting base; 21. Adjusting plate; 22. Adjusting screw; 3. Positioning pin tube; 41. Mounting cylinder; 421. Connecting rod; 422. Limiting ring; 431. Snap-fit ​​block; 432. Linkage rod; 433. Snap-fit ​​groove; 441. Movable disc; 442. Adjusting rod; 443. Return spring; 5. Threaded sleeve; 6. Positioning ring; 7. Movable hole. Detailed Implementation

[0024] Example 1

[0025] like Figure 1-4 As shown, the present invention proposes a car model processing and positioning fixture, which includes a mounting base 1, a fine-tuning mechanism, a positioning pin tube 3, and a limiting mechanism.

[0026] The cross-section of mounting base 1 is "I" shaped;

[0027] The fine-tuning mechanism is mounted on the mounting base 1;

[0028] The positioning pin tube 3 is set on the fine adjustment mechanism. The outer periphery of the positioning pin tube 3 is provided with a tapered guide slope. The surface of the positioning pin tube 3 is threadedly connected to a threaded sleeve 5. The top end of the threaded sleeve 5 is fixedly connected to a positioning ring 6.

[0029] The limiting mechanism is detachably mounted on the positioning pin tube 3 to limit the position of the workpiece;

[0030] The limiting mechanism includes an installation cylinder 41, a limiting component, a snap-fit ​​component, and an adjusting component. The outer diameter of the installation cylinder 41 is smaller than the inner diameter of the positioning pin tube 3. One end of the limiting component is fixedly connected to the installation cylinder 41, and the other end of the limiting component is slidably connected to the positioning pin tube 3. Two sets of snap-fit ​​components are provided. One end of the snap-fit ​​component is snapped into the inner wall of the positioning pin tube 3, and the other end of the snap-fit ​​component extends into the interior of the installation cylinder 41. One end of the adjusting component is located inside the installation cylinder 41 and connected to the snap-fit ​​component, and the other end of the adjusting component extends into the exterior of the installation cylinder 41.

[0031] Example 2

[0032] like Figure 3 As shown, the present invention proposes a positioning fixture for processing automobile models. Compared with Embodiment 1, this embodiment also specifically discloses the structure of the limiting component. The limiting component includes a connecting rod 421 and a limiting ring 422. Multiple connecting rods 421 are provided. One end of the connecting rod 421 is fixedly connected to the mounting cylinder 41. The positioning pin tube 3 has multiple movable holes 7 that are opened through it and correspond one-to-one with the connecting rod 421. The other end of the connecting rod 421 is fixedly connected to the limiting ring 422. The inner circle of the limiting ring 422 is larger than the outer diameter of the positioning pin tube 3.

[0033] Example 3

[0034] like Figure 4 As shown, the present invention discloses a positioning fixture for processing automobile models. Compared with Embodiment 2, this embodiment also specifically discloses the structure of the snap-fit ​​assembly. The snap-fit ​​assembly includes a snap-fit ​​block 431 and a linkage rod 432. The snap-fit ​​block 431 passes through the mounting cylinder 41 and is slidably connected to the mounting cylinder 41. The inner wall of the positioning pin tube 3 is provided with a snap-fit ​​groove 433 that is adapted to the snap-fit ​​block 431. One end of the linkage rod 432 is rotatably connected to the snap-fit ​​block 431, and the other end of the linkage rod 432 is connected to the adjustment assembly.

[0035] Example 4

[0036] like Figure 4 As shown, the present invention discloses a positioning fixture for processing automobile models. Compared with Embodiment 3, this embodiment further discloses the structure of the adjustment component. The adjustment component includes a movable disk 441, an adjustment rod 442, and a return spring 443. The movable disk 441 is slidably disposed inside the mounting cylinder 41. The linkage rod 432 is rotatably connected to the movable disk 441. One end of the adjustment rod 442 is fixedly connected to the movable disk 441, and the other end of the adjustment rod 442 passes through the mounting cylinder 41 and extends to the outside of the mounting cylinder 41. One end of the return spring 443 is fixedly connected to the movable disk 441, and the other end of the return spring 443 is fixedly connected to the top of the inner wall of the mounting cylinder 41.

[0037] Example 5

[0038] like Figure 1 As shown, the present invention proposes a positioning fixture for processing automobile models. Compared with embodiment four, this embodiment also specifically discloses the structure of a fine-tuning mechanism. The fine-tuning mechanism includes an adjusting plate 21 and an adjusting screw 22. The adjusting plate 21 is slidably connected to the mounting base 1, the positioning pin tube 3 is fixedly connected to the adjusting plate 21, one end of the adjusting screw 22 is rotatably connected to the mounting base 1, and the other end of the adjusting screw 22 passes through the adjusting plate 21 and is threadedly connected to the adjusting plate 21.

[0039] First, fix the mounting base 1. Rotate the adjusting screw 22 to drive the adjusting plate 21 to slide along the surface of the mounting base 1 to adjust the positioning pin tube 3 to a suitable position. Rotate the threaded sleeve 5 to adjust the positioning ring 6 to a suitable height. Then, insert the positioning pin tube 3 into the positioning hole of the car model. Then, insert the mounting cylinder 41 into the positioning pin tube 3. The snap block 431 is inserted into the snap groove 433 under the action of the return spring 443. The limit ring 422 and the positioning ring 6 cooperate to complete the positioning and fixing of the car model. When it is necessary to remove the car model from the positioning fixture, pull the adjusting rod 442 to drive the snap block 431 to slide out of the snap groove 433 through the movable plate 441 and the linkage rod 432 to remove the limit mechanism from the positioning pin tube 3. Then, remove the car model from the positioning pin tube 3.

[0040] The embodiments of the present invention have been described in detail above with reference to the accompanying drawings. However, the present invention is not limited thereto. Various changes can be made within the scope of knowledge possessed by those skilled in the art without departing from the spirit of the present invention.

Claims

1. An automobile model machining positioning tool, characterized in that, include: Mounting base (1), the cross-section of which is "I" shaped; The fine-tuning mechanism is movable on the mounting base (1); The positioning pin (3) is set on the fine adjustment mechanism, and the outer periphery of the positioning pin (3) is provided with a tapered guide slope. The limiting mechanism is detachably mounted on the positioning pin tube (3) to limit the position of the workpiece; The limiting mechanism includes an installation cylinder (41), a limiting component, a snap-fit ​​component, and an adjusting component. The outer diameter of the installation cylinder (41) is smaller than the inner diameter of the positioning pin tube (3). One end of the limiting component is fixedly connected to the installation cylinder (41), and the other end of the limiting component is slidably connected to the positioning pin tube (3). Two sets of snap-fit ​​components are provided. One end of the snap-fit ​​component is snapped into the inner wall of the positioning pin tube (3), and the other end of the snap-fit ​​component extends into the interior of the installation cylinder (41). One end of the adjusting component is located inside the installation cylinder (41) and connected to the snap-fit ​​component, and the other end of the adjusting component extends into the exterior of the installation cylinder (41).

2. The positioning tool for processing a model car according to claim 1, wherein, The surface of the positioning pin tube (3) is threadedly connected to a threaded sleeve (5), and the top end of the threaded sleeve (5) is fixedly connected to a positioning ring (6).

3. The positioning tool for processing a model car according to claim 1, wherein, The limiting assembly includes a connecting rod (421) and a limiting ring (422); multiple connecting rods (421) are provided, one end of the connecting rod (421) is fixedly connected to the mounting cylinder (41), the positioning pin tube (3) is provided with multiple movable holes (7) and corresponds to the connecting rod (421) one by one, the other end of the connecting rod (421) is fixedly connected to the limiting ring (422), and the inner circle of the limiting ring (422) is larger than the outer diameter of the positioning pin tube (3).

4. The positioning tool for processing a model car according to claim 1, wherein, The snap-fit ​​assembly includes a snap-fit ​​block (431) and a linkage rod (432); the snap-fit ​​block (431) passes through the mounting cylinder (41) and is slidably connected to the mounting cylinder (41); the inner wall of the positioning pin tube (3) is provided with a snap-fit ​​groove (433) that is adapted to the snap-fit ​​block (431); one end of the linkage rod (432) is rotatably connected to the snap-fit ​​block (431); and the other end of the linkage rod (432) is connected to the adjustment assembly.

5. The positioning tool for processing a model car according to claim 4, wherein, The adjustment assembly includes a movable disc (441), an adjustment rod (442), and a return spring (443). The movable disc (441) is slidably disposed inside the mounting cylinder (41). The linkage rod (432) is rotatably connected to the movable disc (441). One end of the adjustment rod (442) is fixedly connected to the movable disc (441), and the other end of the adjustment rod (442) passes through the mounting cylinder (41) and extends to the outside of the mounting cylinder (41). One end of the return spring (443) is fixedly connected to the movable disc (441), and the other end of the return spring (443) is fixedly connected to the top of the inner wall of the mounting cylinder (41).

6. The positioning fixture for processing a model car according to claim 1, wherein The fine-tuning mechanism includes an adjusting plate (21) and an adjusting screw (22); the adjusting plate (21) is slidably connected to the mounting base (1), the positioning pin tube (3) is fixedly connected to the adjusting plate (21), one end of the adjusting screw (22) is rotatably connected to the mounting base (1), and the other end of the adjusting screw (22) passes through the adjusting plate (21) and is threadedly connected to the adjusting plate (21).

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